Reference work entry
This is a dark grey to black non-sticky soil which main ingredient is volcanic glass. Volcanic mud contains certain medicinal elements that can be used for health-care purposes. The Leiqiong Global Geopark (Haikou Scenic District) has developed a type of ‘volcanic mud’ mineral soap that has become popular in the market. Wudalianchi volcanic mud has also been developed into a series of products, including mineral essence nutritional masks, cleansing milk, shampoo, volcanic mud skin cream, foot cream and whitening moisturising cream (Fig. 14).
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